.container2 {
    width: calc(50% - 120px);
    height: 80%;
    background: #fff;
    margin: 0 15px;
    padding: 30px;
    overflow: hidden;
    box-shadow: 0 2px 5px rgb(209, 209, 209);
}

.container2 .buttonGroup {
    display: flex;
    flex-direction: row;
    justify-content: center;
    margin-top: 40px;
    /* padding: 0 15px; */
}

.container2 .buttonGroup button {
    outline: none;
    border: 1px solid rgb(216, 216, 216);
    border-right-color: transparent;
    padding: 10px 5px;
    font-size: 1em;
    flex: 1 1 auto;
    cursor: pointer;
    color: rgb(107, 107, 107);
    background: #fff;
}

.container2 .buttonGroup button:hover {
    background: rgb(228, 228, 228);
    color: rgb(29, 29, 29);
}

.container2 .buttonGroup button:active {
    background: rgb(165, 160, 154);
    color: #fff;
}

.container2 .buttonGroup button.active {
    background: rgb(224, 224, 224);
    color: rgb(0, 0, 0);
}

.container2 .buttonGroup button:nth-of-type(1) {
    border-radius: 4px 0 0 4px;
}

.container2>.buttonGroup button:nth-last-of-type(1) {
    border-radius: 0 4px 4px 0;
    border-right-color: rgb(216, 216, 216);
}
.input{
    outline: none;
    border: none;
    /* margin-left:30px; */
    font-size: 1rem;
    box-shadow: 0 0 10px #eee;
    width:calc(100% - 15px);
    text-indent:2em;
    font-family:  source-code-pro, Menlo, Monaco, Consolas, "Courier New",
    monospace;
}
.container2 svg{
    width:100%;
    height:100%;
}
.introduce{
    margin-top: 30px;
    border-top: 1px solid rgb(224, 224, 224);
    font-size: 1.1em;
    text-indent:2em;
}